/* routines for printing error messages  */
#include <stdio.h>

#include "defs.h"


void fatal(char *msg)
{
    fprintf(stderr, "%s: f - %s\n", myname, msg);
    done(2);
}


void no_space(void)
{
    fprintf(stderr, "%s: f - out of space\n", myname);
    done(2);
}


void open_error(char *filename)
{
    fprintf(stderr, "%s: f - cannot open \"%s\"\n", myname, filename);
    done(2);
}


void unexpected_EOF(void)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", unexpected end-of-file\n",
	    myname, lineno, input_file_name);
    done(1);
}


void print_pos(char *st_line,char *st_cptr)
{
char *s;

  if (st_line == 0) return;
  for (s = st_line; *s != '\n'; ++s)
    {
	 if (isprint(*s) || *s == '\t')
      putc(*s, stderr);
	  else
      putc('?', stderr);
    }
  putc('\n', stderr);
  for (s = st_line; s < st_cptr; ++s)
    {
	 if (*s == '\t')
	   putc('\t', stderr);
	 else
	   putc(' ', stderr);
    }
  putc('^', stderr);
  putc('\n', stderr);
}


void syntax_error(int st_lineno,char *st_line,char *st_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", syntax error\n",
	    myname, st_lineno, input_file_name);
    print_pos(st_line, st_cptr);
    done(1);
}


void unterminated_comment(int c_lineno,char *c_line,char *c_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", unmatched /*\n",
	    myname, c_lineno, input_file_name);
    print_pos(c_line, c_cptr);
    done(1);
}


void unterminated_string(int s_lineno,char *s_line,char *s_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", unterminated string\n",
	    myname, s_lineno, input_file_name);
    print_pos(s_line, s_cptr);
    done(1);
}


void unterminated_text(int t_lineno,char *t_line,char *t_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", unmatched %%{\n",
	    myname, t_lineno, input_file_name);
    print_pos(t_line, t_cptr);
    done(1);
}


void unterminated_union(int u_lineno,char *u_line,char *u_cptr)
{
    fprintf(stderr,
      "%s: e - line %d of \"%s\", unterminated %%union declaration\n",
      myname, u_lineno, input_file_name);
    print_pos(u_line, u_cptr);
    done(1);
}


void over_unionized(char *u_cptr)
{
    fprintf(stderr,
       "%s: e - line %d of \"%s\", too many %%union declarations\n",
       myname, lineno, input_file_name);
    print_pos(line, u_cptr);
    done(1);
}


void illegal_tag(int t_lineno,char *t_line,char *t_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", illegal tag\n",
	    myname, t_lineno, input_file_name);
    print_pos(t_line, t_cptr);
    done(1);
}


void illegal_character(char *c_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", illegal character\n",
	    myname, lineno, input_file_name);
    print_pos(line, c_cptr);
    done(1);
}


void used_reserved(char *s)
{
    fprintf(stderr,
      "%s: e - line %d of \"%s\", illegal use of reserved symbol %s\n",
      myname, lineno, input_file_name, s);
    done(1);
}


void tokenized_start(char *s)
{
     fprintf(stderr,
       "%s: e - line %d of \"%s\", the start symbol %s cannot be declared to be a token\n",
       myname, lineno, input_file_name, s);
     done(1);
}


void retyped_warning(char *s)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", the type of %s has been redeclared\n",
      myname, lineno, input_file_name, s);
}


void reprec_warning(char *s)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", the precedence of %s has been redeclared\n",
      myname, lineno, input_file_name, s);
}


void revalued_warning(char *s)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", the value of %s has been redeclared\n",
      myname, lineno, input_file_name, s);
}


void terminal_start(char *s)
{
    fprintf(stderr,
      "%s: e - line %d of \"%s\", the start symbol %s is a token\n",
      myname, lineno, input_file_name, s);
    done(1);
}


void restarted_warning(void)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", the start symbol has been redeclared\n",
      myname, lineno, input_file_name);
}


void no_grammar(void)
{
    fprintf(stderr,
      "%s: e - line %d of \"%s\", no grammar has been specified\n",
      myname, lineno, input_file_name);
    done(1);
}

void terminal_lhs(int s_lineno)
{
    fprintf(stderr,
      "%s: e - line %d of \"%s\", a token appears on the lhs of a production\n",
      myname, s_lineno, input_file_name);
    done(1);
}


void prec_redeclared(void)
{
    fprintf(stderr,
      "%s: w - line %d of  \"%s\", conflicting %%prec specifiers\n",
      myname, lineno, input_file_name);
}


void unterminated_action(int a_lineno,char *a_line,char *a_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", unterminated action\n",
	    myname, a_lineno, input_file_name);
    print_pos(a_line, a_cptr);
    done(1);
}


void dollar_warning(int a_lineno,int i)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", $%d references beyond the end of the current rule\n",
      myname, a_lineno, input_file_name, i);
}


void dollar_error(int a_lineno,char *a_line,char *a_cptr)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", illegal $-name\n",
	    myname, a_lineno, input_file_name);
    print_pos(a_line, a_cptr);
    done(1);
}


void untyped_lhs(void)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", $$ is untyped\n",
	    myname, lineno, input_file_name);
    done(1);
}


void untyped_rhs(int i,char *s)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", $%d (%s) is untyped\n",
	    myname, lineno, input_file_name, i, s);
    done(1);
}


void unknown_rhs(int i)
{
    fprintf(stderr, "%s: e - line %d of \"%s\", $%d is untyped\n",
	    myname, lineno, input_file_name, i);
    done(1);
}


void default_action_warning(void)
{
    fprintf(stderr,
      "%s: w - line %d of \"%s\", the default action assigns an undefined value to $$\n",
      myname, lineno, input_file_name);
}


void undefined_goal(char *s)
{
    fprintf(stderr, "%s: e - the start symbol %s is undefined\n", myname, s);
    done(1);
}


void undefined_symbol_warning(char *s)
{
    fprintf(stderr, "%s: w - the symbol %s is undefined\n", myname, s);
}
